Take not of the OS- Windows 10 Emerging Markets 64- I assume this is the same as single license?
Where can I find a statement/information from Microsoft directly to confirm that this particular operating system is allowed for business use- not talking about functionality but licensing terms? I normally had a number I could phone but it seems Microsoft discontinued use of this number for my licensing queries

Who is Participating?

Windows 10 Emerging Markets 64 is a variant of Win 10 Home with a fixed single language option . It sounds from your question that you are looking for a Pro license so would need to upgrade - most of the business functions will be disabled or hidden.

Ignoring function there is nothing in the EULA for Windows 10 preventing you using a Home edition variant in a business environment provided you do not bypass any technical restrictions or limitations in the software.

Thank you for the feedback. not the functionality I am asking about but whether it is legal to use Windows 10 SL/Emerging Markets for business use/commercial environment- so from a licensing perspective only. Want to ensure we are 100% legal